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九种不定式省略to的情况

九种不定式省略to的情况
九种不定式省略to的情况

句子成分

句子主要有以下几种成分:

1)主语(subject)是一句话的中心,整句话都在谈它的情况:my sister is a nurse.

Her room is on the 5th floor.

2)谓语(predict)是主语的主要情况,可以表示动作,也可以表示状态:she works in a hotel.(动作) she knows a little English.(状态)

3)宾语(object)表示动作的承受者,也可以表示动作的结果:Everybody likes her. She is writing a letter now.

4)表语(predicative)和系动词一道构成谓语:she is conscientious girl.她是一个工作认真的女孩。

5)定语(attributive)修饰名词,代词等:

Her hospital is not very big. But everyone in the hospital works hard..

6)状语(adverbial)修饰动词,形容词或者副词:She goes to work very early.

She feels very happy

此外还有同位语(appositive)插入语(parenthesis)以及呼语(vocative)This is my sister Mary.

Mary is good girl, they say

Sit down, Mary

句子的类型

1)按照说话的目的分为四类:

A.陈述句(statement): 陈述一个事实,表示一个看法等:Beijing is the capital of China

She may be right.

B.问句(question): 提出问题:

Where are you from?

C.祈使句(imperative)提出命令请求等。

Don’t be late again.

Take a seat, please.

D.感叹句(exclamation)表示赞美惊异等情绪:

W hat a nice view from the window!

2)从结构上来区分又可以分为三类:

a简单句

如果一个句子只包含一个主谓结构,而句子各个成分都只用单词或短语表示,它就是简单句。

I live in the country.

The teachers and students cheered at the news.

简单句主要由五种基本句型构成,千千万万的句子变化可以看作是这五种基本句型的扩展、省略、组合和倒装。

基本句型一:主语+谓语(不及物)

The baby smiled.

The teacher came in, followed by some students.

基本句型二:主语+谓语(系)+表语。

The students are on the playground.

基本句型三:主语+谓语(及物)+宾语。

I will help them.

基本句型四:主语+谓语(及物)+间接宾语+直接宾语。

He gave me a beautiful card.= He gave a beautiful card to me

基本句型五:主语+谓语(及物)+宾语+宾补。

We should paint the wall white.

We found him a flat.

We found him a good friend.

I saw him playing on the ground

I saw him play on the…

I saw him played by a dog on the ground

b并列句

把两个或两个以上互不依从的、由主谓结构组成的简单句连接起来,就构成一个并列句。

Y our composition is well written, but there is room for improvement.

We must make greater efforts, or we will fall behind.

He rarely stays in hotels, for he can’t afford it.

c复合句

复合句包含两个或两个以上的主谓结构。其中一个主谓结构是全句的主体,表达一个主要思想,称作主句;另一个或几个主谓结构作为主句里的一个成分,表达一个或几个次要思想,称作从句。从句包括主语从句、表语从句、宾语从句、同位语从句、定语从句、状语从句。

其中,在复合句中起名词性作用的各种从句,统称为名词性从句。名词性从句包括主语从句、宾语从句、表语从句和同位语从句。

四名词的用法

1作主语

例:The children are playing under the tree. 孩子们在树下玩耍。

The little boy is about five years old. 那小男孩大约5岁。

2作宾语

1)作及物动词的宾语

例:She opens the window at five every morning. 她每天早上五点钟开窗。He teaches English. 他教英语。

2)作介词的宾语

例:He looks after the child. 他照看那孩子。

She walked out of the room. 她从房间走了出去。

3作表语

例:Her daughter is a famous singer. 她女儿是一位著名歌唱家。

It is an apple. 这是一个苹果。

4作宾语补足语

例:They named the boy Tom. 他们给那个男孩取名汤姆。

We made him our monitor. 我们选他当班长。

5作主语补足语

例:He is considered an excellent writer. 他被认为是一位优秀的作家。6作定语

例:She works in a shoe store. 她在一家鞋店工作。

What’s your room number? 你的房间号码是多少?提示

a. 名词作定语修饰另一个名词时,一般用单数形式。

例:maths problem 数学问题

colour film 彩色电影

paper tiger 纸老虎

bicycle factory 自行车厂

the street lights 路灯

the city centre 市中心

medicine box 药盒

weather forecast 天气预报

film tickets 电影票

arrival time 抵达时间

country life 乡村生活

history lesson 历史课

the winter train timetable 冬季火车时刻表

b. 但具有特殊复数形式等的名词作定语时,要用复数形式。

例:women teachers 女教师

clothes brush 衣刷

communications satellite 通信卫星

goods train 货车

c. 比较名词作定语和形容词作定语的不同含义:

colour TV 彩电

gold watch 金表

rain forest (热带)雨林

colourful dress 艳丽的女服

the golden sun 金灿灿的太阳

raing region 金雨地区

7作状语

例:Wait a moment, please. 请等一会儿。

The car runs 120 kilometers an hour. 这部车每小时行驶120公里。

8作同位语

例:We like Mr. Wang, our English teacher. 我们喜欢我们的英语老师王先生

形容词修饰名词或不定代词,表示人或事物的性质、特征或状态。

1. 用作表语

Everyone was happy. 每个人都很高兴。

She is interested in watching TV. 她对看电视感兴趣。

2. 用作定语

He is an honest student. 他是个诚实的学生。(修饰名词)

The young man is her boy friend. 这个小伙子是她的男朋友。(修饰名词)

I have something important to discuss with you. 我有重要的事要和你商量。(修饰不定代词something)

3. 用作宾语补足语(所谓宾补,是对宾语的补充说明,那么如何判定宾补呢,那就是要看宾语与形容词是否有逻辑上的主谓关系,也就是说宾补是宾语“发生的动作或存在的状态”。第一句中的walking和alone没有这种关系,第二句中的cat 和alive 就有这种关系,意思是“猫活着”。再比如,

He made me angry中me 和angry有这种关系,意思是“我生气”。)

He pushed the door open. 他把门推开了。

We find the problem very difficult. 我们发现这个问题很难。

4. 用作状语(

He arrived home, hungry and cold. 他回到家里,又饿又冷。

I went there full of joy. 我兴高采烈地去了那儿。

He sat in the corner, silent. 他坐在角落里,一言不发。

5.用作主语或宾语

“定冠词the+形容词”表示一类人或物。如:the old(老人),the young(青少年)这种名词化的形容词起名词的作用,在句中可作主语或宾语。

The new will replace the old. 新事物将代替旧事物。

We should respect the old and love the young. 我们应该尊老爱幼。

5. 用作独立成分

Strange to say, he married such a girl. 说来也怪,他娶了那样个女孩子。

Sure enough, he got angry at the news. 果然,他对这个消息很生气。

Worse still, we got lost in the dark. 更糟的是,我们在黑暗中又迷路了。

英语中,修饰动词、形容词、副词等的句子成分叫状语(adverbial)。

状语的功用:状语说明地点、时间、原因、目的、结果、条件、方向、程度、方式和伴随状况等。

状语一般由副词、介词短语、分词和分词短语、不定式或相当于副词的词或短语来担当。其位置一般放在句末,但也可放在句首或句中。

副词是一种用来修饰动词,形容词,副词或全句的词,说明时间,地点,程度,方式等

概念。1状语是谓语里的另一个附加成分,它附加在谓语中心语的前面,从情况,时间,

处所,方式,条件,对象,肯定,否定,范围和程度等方面对谓语中心进行修饰或限制.

状语与定语相同的地方是,都是前加附加成分;不同的地方是,它是谓语里的附加

成分,而定语是主语或宾语里的附加成分.从句子的层次上看,状语是在第二个层次和

第三个层次里的成分,有时甚至是更低层次的成分.

2状语的构成

状语的构成经常充当状语的有形容词,副词,时间处所名词,能愿动词,指示代词,以及方位短语,介词短语,动宾短语,谓词性联合短语,谓词性偏正短语,谓词性主谓短语等.

含有动量词的数量短语以及重叠式的数量短语(不论动量,物量)也可以充当状语.

此外,少数名词带上表比况的助词也可以作状语.

副词在句中可用作哪些成分

1. 用作状语

The evening passed quickly. 晚上很快过去了。

We must think about this seriously. 我们应认真考虑此事。

2. 用作表语

The war is over. 战争结束了

He isn’t up yet. 他还没起床。

3. 用作宾语

They don’t like strangers round here. 他们不喜欢这周围有陌生人。

There’s a fine v iew from here. 从这里可以看到一片美丽的景色。

I haven’t been able to do that up till now. 到现在为止我还没能这样做。

By then he was more than fifty years of age. 那时他已五十多岁。

副词用作宾语的用法十分有限,通常只用作介词宾语,并且只限于某些表示时间和地点的副词,而且不同的副词有不同的搭配特点。

4. 用作宾语补足语

I need this tooth out. 我需要拔掉这颗牙。

Everybody was glad to see him back. 看到他回来大家都很高兴。

一般说来,能用作表语的副词都可用作宾语补足语。如:

He went to see her but found that she was out. =He went to see her but found her out. 他去看她,但发现她不在家。

5. 用作定语(https://www.sodocs.net/doc/286722289.html,)

Read the paragraph below. 阅读下面的短文。

We had to get off and take the bus behind. 我们得下车转搭后面的车。

副词用作定语总是放在被修饰名词之后,如the above passage / the passage above都可表示“上面的段落”,但前者的above 前置,为形容词;后者的above后置,为副词。

在英语中将名词用作状语的情况不算普遍,在许多情况下,它们都有自己的搭配习惯,使用时需注意。名词作状语的主要用法如下:一、表示时间在英语中,名词用作状语时通常用于表示时间,换句话说,也就是表示时间的名词在某些搭配中用作状语。如:Wait a moment.等一

会儿。See you next

说是名词,其实多是名词词组,总结了一个下午,大致有以下几类,拿来和大家一同分享.

[1]名词或名词词组作状语,一般置于句末。

Wait a minute. 等一会儿。

Come this way! 走这边!

No one really knows why wolves walk (in)single file.排成一列行走。

[2]next/last/this/one/every/each/some/any/all+ day/month/year/Sunday等等可以直接用作状语,有些已经演化成了固定短语如all the year round一年到头all the time一直

We must get together again some day.将来某天我们必能再相聚.

see you next Monday.

[3]一些由and或or连接所形成的名词短语如Rain or shine和heart and soul 等直接作状语

Rain or shine,we must arrive there on time.

we should serve people heart and soul.

[4]名词词组each/every/the first/time, the instant/instance/moment/minute 所引导的时间状语从句; the way所直接引导的方式状语从句

例如:

You see the lightning the instant it happens, but you hear the thunder later. Every time I saw him, I would like to listen to his songs.

I came to the house the moment he was about to leave.

给你举个例子。He comes in the classroom ,a book in hand。上句中b ook表示他拿了本书,修饰他进教室时的情况,表示伴随的状况。此时的名词b ook作状语。

一、不及物动词接形容词(短语)作状语时,句子的主语应视为形容词(短语)的逻辑主语,它表示主语的状态或结果。 He married young.他年纪轻轻就结婚了。. The sun rises r ed.太阳出来红彤彤。 Crusoe hurried home,full of fear.克鲁索赶紧回家,内心充满恐惧。He returned from war,safe and sound.’ 他安然无恙地从战争中归来。 The goat

rolled over,dead.山羊翻了个身,死T。二、不及物动词接副词作状语时,副词是修饰动词的。 She waited anxiously for the news.她不安地等待消息。 Theb咭fire sPread qu ickly.大火迅速蔓延。 Shall we 90 together or separately?我们一齐去还是分开去好呢? Mueh as 1 admire his eourage,1 don,t think he aeted wisely. 虽然我很钦佩他的勇气,但我认为他这么做是不明智的。

中考英语 不定式省略to的10种情况

不定式省略to的10种情况 2009-12-30 11:32:34 来源:编辑:点击:次 年终奖:你的年终奖到手了吗?冷暴力口语,你伤父母心了吗? 一、使役动词与to的省略 当不定式用于let, make, have等使役动词后作宾语补足语,不定式必须省略to。如: Let me have another cup of tea. 给我再来一杯茶。 She had him dig away the snow. 她让他把雪挖走。 They made him tell them everything. 他们强迫他把一切全告诉他们。 但是,当使役动词用于被动语态时,其后的不定式则必须要带to。如: 他被迫一天工作20小时。 误:He was made work twenty hours a day. 正:He was made to work twenty hours a day. 注意,表示使役意义的let和have很少用于被动语态。 另外注意,force, oblige等虽然也表示“使”,但它们后用作宾语补足语的不定式必须带to。如: They forced her to sign the paper. 他们强迫她在文件上签字。 The law obliged parents to send their children to school. 法律要求父母送子女上学。 二、感觉动词与to的省略 当不定式用于表示感觉的动词feel, hear, notice, observe, see, watch, look at, listen to等作宾语补足语时,不定式必须省略to。如: We all felt the house shake. 我们都感觉这房子在震动。

有关to do不定式的,to do不定式什么时候可以省略to do;还有什么时候用被动形式,什么时候不用。

2014年8月4日 17:10 有关to do不定式的,to do不定式什么时候可以省略to do;还有什么时候用被动形式,什么时候不用。 一、使役动词与to的省略 当不定式用于let, make, have等使役动词后作宾语补足语,不定式必须省略to。如:Let me have another cup of tea. 给我再来一杯茶。 She had him dig away the snow. 她让他把雪挖走。 They made him tell them everything. 他们强迫他把一切全告诉他们。 但是,当使役动词用于被动语态时,其后的不定式则必须要带to。如: 他被迫一天工作20小时。 误:He was made work twenty hours a day. 正:He was made to work twenty hours a day. 注意,表示使役意义的let和have很少用于被动语态。 另外注意,force, oblige等虽然也表示“使”,但它们后用作宾语补足语的不定式必 须带to。如: They forced her to sign the paper.他们强迫她在文件上签字。 The law obliged parents to send their children to school. 法律要求父母送子女上学。 二、感觉动词与to的省略 当不定式用于表示感觉的动词feel, hear, notice, observe, see, watch, look at, listen to等作宾语补足语时,不定式必须省略to。如: We all felt the house shake. 我们都感觉这房子在震动。 I heard him go down the stairs. 我听见他下楼了。 Did you notice her leave the house? 她离开屋子你注意到了吗? I watched her get into the car. 我看着她上了车。 但是,当feel后用作宾语补足语的不定式为to be时,则不能省略to。如: They all felt the plan to be unwise. 他们都认为这个计划不明智。 注意,当这些动词变为被动语态时,不定式前的to不能省略。如: They were heard to break a glass in the next door. 听见他们在隔壁打破了一个玻璃杯子。 另外,若用作宾语补足语的不定式为完成式,则通常应带 to。如: I noticed her to have come early. 我注意到她来得很早。 三、why (not) 与to的省略 在why (not)…?之后的不定式不能带to。如: Why argue with him? He’ll never change his mind. 为什么要跟他争论? 他永远不会改变 自己的看法。 Why not try going by boat for a change? 为什么不试着坐船去,这样也可以换换花样? Why not wait till the winter sales to buy a new coat? 为什么不等到冬季大贱卖时再买一件新外衣呢? 四、介词except / but与to的省略 当不定式用作介词except或except的宾语时,该不定式有时带 to,有时不带 to,情形比较复杂,大致原则是:其前有do,不定式不带 to;其前没有 do,不定式通常带to。如: He likes nothing except to watch TV. 除了看电视外,他什么都不喜欢。 It had no effect except to make him angry. 除惹他生气外,没产生任何效果。

不定式to在什么情况下可以省略

外教一对一https://www.sodocs.net/doc/286722289.html, 不定式to在什么情况下可以省略 1. 当and或or连接两个并列不定式时,第二个to常省。 I plan to call him and discuss this question. 我计划给他打电话,讨论一下这个问题。 My friend in China asked me to telephone or write to her in my free time. 我中国的朋友让我有空给她打电话或写信。 2. 当两个并列to有对比意义,第二个to不能省。 I haven’t decided to stay at home or to travel to Beijing this holiday. 我还没决定假期是待在家里还是去北京旅行。 To be, or not to be, that is the question. 生存还是毁灭,这是一个值得思考的问题。(《哈姆雷特》) 3. 当两个to之间无并列连词,to不可省。 I came here not to help you, but to fright you. 我来这不是为了帮你,而是为了吓唬你。 4. 当三个或以上带to不定式构成排比,所有to不可省。

外教一对一https://www.sodocs.net/doc/286722289.html, Read not to contradict or confute; nor to believe and take for granted; not to find talk and discourse; but to weigh and consider.

非谓语动词之动词不定式(to do)的用法

非谓语动词之动词不定式(to do)的用法 非谓语动词是指在句子中不是谓语的动词,主要形式有:不定式、动名词和分词(现在分词和过去分词)。 1.“to do”动词不定式的变形 2.动词不定式的用法 (1)充当主语(一般会用it 当形式主语) To swim here is dangerous. = It is dangerous to swim here. To pass this English exam is unlikely. = (2)充当表语(多数情况下,可以转换成动词不定式做主语) My job is to help with your English learning. To help with your English learning is my job. (3)充当宾语(只能做某些动词的宾语,一般不做介词的宾语;有时用“it”做形式宾语) I decided to attend this meeting last night. I find it necessary to learn a foreign language. 注意:当以下动词欲接动词作宾语时,只能跟不定式作宾语。 decide, determine, learn, wish, hope agree, plan, pretend, dare, refuse, fail prepare, try, manage, help, promise offer, beg, demand, afford, arrange, be supposed

(4)充当宾语补足语 I persuaded him to make a speech in public. 注意:在感官动词/使役动词/help后(see, hear, watch, notice, make, have, let后不定式做宾补时,可省略“to”) I saw them have a disagreement on who should sweep the floor. (我看到了 他们争论的整个过程) 但,感官动词后面也可接Ving形式,表示正在进行。 I saw them arguing about who should sweep the floor. (我看到他们正在 争论谁该扫地,并不一定看到了整个过程) (5)充当状语(目的,原因,结果状语,其逻辑主语与句子主语一致) I wrote him a letter to further explain this matter. (目的状语) I’m sorry to bother you.(原因状语) He queued for hours at the box office only to find that the show was sold out. (结果状语,only + to find/realize/discover表示出乎意料的结果)(6)充当定语(不定式作定语,要放在所修饰的词的后面) I have a lot of dishes to wash. Do you have anything to say? There are 3 questions to answer. (7)一些固定句型中不定式省略“to” had better would rather do… than do… why not do “except/but” 有“do” 无“to”,有”to”无“do” have nothing to do but do… do everything but/except have no choice but to want nothing but/except to (8)当两个或多个作用相同的不定式并列(and/or/than)时,通常只保留第一个不定式的“to”. He told me to stay there and wait for him. It’s easier to persuade people than force them. To try and fail is better than not to try at all. (否定式中“to”不能省略)

(完整版)省略to的动词不定式用法归纳

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九种不定式省略to的情况

句子成分 句子主要有以下几种成分: 1)主语(subject)是一句话的中心,整句话都在谈它的情况:my sister is a nurse. Her room is on the 5th floor. 2)谓语(predict)是主语的主要情况,可以表示动作,也可以表示状态:she works in a hotel.(动作) she knows a little English.(状态) 3)宾语(object)表示动作的承受者,也可以表示动作的结果:Everybody likes her. She is writing a letter now. 4)表语(predicative)和系动词一道构成谓语:she is conscientious girl.她是一个工作认真的女孩。 5)定语(attributive)修饰名词,代词等: Her hospital is not very big. But everyone in the hospital works hard.. 6)状语(adverbial)修饰动词,形容词或者副词:She goes to work very early. She feels very happy 此外还有同位语(appositive)插入语(parenthesis)以及呼语(vocative)This is my sister Mary. Mary is good girl, they say Sit down, Mary 句子的类型 1)按照说话的目的分为四类: A.陈述句(statement): 陈述一个事实,表示一个看法等:Beijing is the capital of China She may be right. B.问句(question): 提出问题: Where are you from? C.祈使句(imperative)提出命令请求等。 Don’t be late again. Take a seat, please. D.感叹句(exclamation)表示赞美惊异等情绪: W hat a nice view from the window! 2)从结构上来区分又可以分为三类: a简单句 如果一个句子只包含一个主谓结构,而句子各个成分都只用单词或短语表示,它就是简单句。 I live in the country. The teachers and students cheered at the news. 简单句主要由五种基本句型构成,千千万万的句子变化可以看作是这五种基本句型的扩展、省略、组合和倒装。 基本句型一:主语+谓语(不及物) The baby smiled. The teacher came in, followed by some students. 基本句型二:主语+谓语(系)+表语。

不定式省略to的九种情况

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不定式省略to的规则

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非谓语之哪些情况下不定式要省略to

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英文中几个特殊动词用法:主动语态省略to被动语态加to

英文中几个特殊动词用法: 主动语态中不加to被动语态中要加to的情况英文中,哪些动词后加不带to的不定式,变被动语态后却必须加to 呢?今天,我们来和这个知识点做个了断。 一、使役动词+宾语 在let, make, have等使役动词接宾语的结构中,通常用不带to的不定式。但当使役动词为被动态时,不带to不定式转为带to不定式。 主动:Let’s go downstairs and have a cup of tea. 让我们到楼下去喝杯茶吧! The teacher made him stay there quietly. 老师让他安静地呆在那里。 The boss made him work 10 hours a day. 老板让他每天工作10小时。 Her father had her do everything. 她爸爸让她做所有事。 被动:He was made to work 10 hours a day. 老板让他每天工作10小时。 二、感官动词+宾语 在see, hear, observe, notice, feel, watch等感官动词接宾语的结构中,用不带to不定式。但是当以上动词为被动态时,不带to不定式转为带to不定式。 主动:I could only see him go. 我只能看着他走。 Mother watched him eat his breakfast. 妈妈看着他吃完早饭。 We felt the house shake. 我们感到房子的震动。 被动:He was seen to enter the house. 有人看到他进入这个房子。 Someone was heard to open the door by us. 我们听到有人开门。

动词不定式专题:不带to不定式的十八种情况

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需要省略to的不定式的情况有

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动词不定式省略的几种情况教学文案

动词不定式省略的几 种情况

动词不定式的基本形式是“to + 动词原形”。但有些词后面的“to”有时会省略。归纳起来,常有下列几种情况: 1. 作使役动词(如make, let, have)和感官动词(如look at, see, hear, watch, listen to, notice)等的宾语补足语时。如: They made the children work 12 hours a day. 他们强迫孩子们一天干12小时。 Let me go. 让我去吧。 I saw him come. 我看见他来了。 We often hear her sing an English song in the classroom. 我们经常听见她在教室唱英语歌。 值得注意的是:以上句子若变为被动语态时,“to”则不能省略。 2. 在动词help后的动词不定式可带“to”,也可不带“to”。如: Will you help me (to) plant this tree, please?请你帮我种这棵树,好吗? 3. 两个或两个以上不定式连用,其作用相同时,除第一个不定式带“to”外,其余不带“to”。如: It’s better to give than receive. 给予比索取好。 4. 在Why not后。如: Why not have some milk? 为什么不来些牛奶呢? 5. had better / best, would rather等固定结构中。如: I would rather stay here. 我宁可留在这儿。

6. 在but, except, besides介词前面有一定义动词“do”时,介词后的不定式可以省略“to”。如: We can do nothing but wait. 除了等我们别无他法。 7. 在助动词和情态动词后接动词原形,动词也是不带“to”的动词不定式的一种形式。如: We can’t play basketball until we finish our homework. 直到完成作业后我们才能去打篮球。 8. 在不定式作表语,主语部分又有all, what only,或有最高级形容词修饰名词和实义动词“do”时。如: The best way to do is wait till she comes back.最好的办法是等她回来。 动词不定式为非谓语动词的一种形式,由“小品词to+动词原形”构成,但有时小品词to可以省略,下面便是笔者归纳的几组动词不定式省略to的情况: 1. 与助动词和情态动词一起构成复合谓语时,可以省略to。例: (1)He doesn’t like singing. 他不喜欢唱歌。 (2)He will come here tomorrow. 他明天将到这儿来。 [注]在ought, used, be, have之后仍带to。例如:

不带to的动词不定式通常有下面十八种情况

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I noticed her to have come early. 我注意到她来得很早。 2. 使役动词后省略to的情况 在let, make, have等使役动词后用作宾语补足语的不定式必须省略to。如: My mother wouldn’t let me go to the film. 我妈妈不会让我去看电影的。 1) 当使役动词用于被动语态时,要补上在主动语态中省略的to(主要是指make,let和have很少用于被动语态)。 2) force, oblige等虽然也表示“使”,但它们后用作宾语补足语的不定式必须带to。如: He forced me to go with them. 他迫使我同他们一起去。 The police obliged him to leave. 警方强迫他离开。 3)使役动词get后作宾补的不定式要带to. 二、主语带do表语省略to的情况 由all, what 引导的主语从句或者主语被only, first, one, least 或形容词最高级修饰时而且从句中含有do时,其表语如果是动词不定式,则往往省to。如: All you do now is (to) complete the form. 你现在要做的只是把这张表填好。 The only thing to do now is (to) go on. 前进是现在唯一的出路。

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